<template>
  <div class="radar-chart">
    <div ref="chart" class="chart"></div>
  </div>
</template>

<script>
import * as echarts from 'echarts/core';
import { TitleComponent, LegendComponent } from 'echarts/components';
import { RadarChart } from 'echarts/charts';
import { CanvasRenderer } from 'echarts/renderers';
echarts.use([TitleComponent, LegendComponent, RadarChart, CanvasRenderer]);

export default {

  name: 'RadarChart',
  data() {
    return {
      chartInstance: null,
      option: {
        backgroundColor: '#161627',
        title: {
          text: 'AQI - Radar',
          left: 'center',
          textStyle: {
            color: '#eee'
          }
        },
        legend: {
          bottom: 5,
          data: ['Beijing', 'Shanghai', 'Guangzhou'],
          itemGap: 20,
          textStyle: {
            color: '#fff',
            fontSize: 14
          },
          selectedMode: 'single'
        },
        radar: {
          indicator: [
            { name: 'AQI', max: 300 },
            { name: 'PM2.5', max: 250 },
            { name: 'PM10', max: 300 },
            { name: 'CO', max: 5 },
            { name: 'NO2', max: 200 },
            { name: 'SO2', max: 100 }
          ],
          shape: 'circle',
          splitNumber: 5,
          axisName: {
            color: 'rgb(238, 197, 102)'
          },
          splitLine: {
            lineStyle: {
              color: [
                'rgba(238, 197, 102, 0.1)',
                'rgba(238, 197, 102, 0.2)',
                'rgba(238, 197, 102, 0.4)',
                'rgba(238, 197, 102, 0.6)',
                'rgba(238, 197, 102, 0.8)',
                'rgba(238, 197, 102, 1)'
              ].reverse()
            }
          },
          splitArea: {
            show: false
          },
          axisLine: {
            lineStyle: {
              color: 'rgba(238, 197, 102, 0.5)'
            }
          }
        },
        series: [
          {
            name: 'Beijing',
            type: 'radar',
            lineStyle: {
              width: 1,
              opacity: 0.5
            },
            data: [
              [55, 9, 56, 0.46, 18, 6, 1],
              [25, 11, 21, 0.65, 34, 9, 2],
              [56, 7, 63, 0.3, 14, 5, 3],
              [33, 7, 29, 0.33, 16, 6, 4],
              [42, 24, 44, 0.76, 40, 16, 5],
              [82, 58, 90, 1.77, 68, 33, 6],
              [74, 49, 77, 1.46, 48, 27, 7],
              [78, 55, 80, 1.29, 59, 29, 8],
              [267, 216, 280, 4.8, 108, 64, 9],
              [185, 127, 216, 2.52, 61, 27, 10],
              [39, 19, 38, 0.57, 31, 15, 11],
              [41, 11, 40, 0.43, 21, 7, 12],
              [64, 38, 74, 1.04, 46, 22, 13],
              [108, 79, 120, 1.7, 75, 41, 14],
              [108, 63, 116, 1.48, 44, 26, 15],
              [33, 6, 29, 0.34, 13, 5, 16],
              [94, 66, 110, 1.54, 62, 31, 17],
              [186, 142, 192, 3.88, 93, 79, 18],
              [57, 31, 54, 0.96, 32, 14, 19],
              [22, 8, 17, 0.48, 23, 10, 20],
              [39, 15, 36, 0.61, 29, 13, 21],
              [94, 69, 114, 2.08, 73, 39, 22],
              [99, 73, 110, 2.43, 76, 48, 23],
              [31, 12, 30, 0.5, 32, 16, 24],
              [42, 27, 43, 1, 53, 22, 25],
              [154, 117, 157, 3.05, 92, 58, 26],
              [234, 185, 230, 4.09, 123, 69, 27],
              [160, 120, 186, 2.77, 91, 50, 28],
              [134, 96, 165, 2.76, 83, 41, 29],
              [52, 24, 60, 1.03, 50, 21, 30],
              [46, 5, 49, 0.28, 10, 6, 31]

            ]
          },
          {
            name: 'Shanghai',
            type: 'radar',
            lineStyle: {
              width: 1,
              opacity: 0.5
            },
            data: [
              [91, 45, 125, 0.82, 34, 23, 1],
              [65, 27, 78, 0.86, 45, 29, 2],
              [83, 60, 84, 1.09, 73, 27, 3],
              [109, 81, 121, 1.28, 68, 51, 4],
              [106, 77, 114, 1.07, 55, 51, 5],
              [109, 81, 121, 1.28, 68, 51, 6],
              [106, 77, 114, 1.07, 55, 51, 7],
              [89, 65, 78, 0.86, 51, 26, 8],
              [53, 33, 47, 0.64, 50, 17, 9],
              [80, 55, 80, 1.01, 75, 24, 10],
              [117, 81, 124, 1.03, 45, 24, 11],
              [99, 71, 142, 1.1, 62, 42, 12],
              [95, 69, 130, 1.28, 74, 50, 13],
              [116, 87, 131, 1.47, 84, 40, 14],
              [108, 80, 121, 1.3, 85, 37, 15],
              [134, 83, 167, 1.16, 57, 43, 16],
              [79, 43, 107, 1.05, 59, 37, 17],
              [71, 46, 89, 0.86, 64, 25, 18],
              [97, 71, 113, 1.17, 88, 31, 19],
              [84, 57, 91, 0.85, 55, 31, 20],
              [87, 63, 101, 0.9, 56, 41, 21],
              [104, 77, 119, 1.09, 73, 48, 22],
              [87, 62, 100, 1, 72, 28, 23],
              [168, 128, 172, 1.49, 97, 56, 24],
              [65, 45, 51, 0.74, 39, 17, 25],
              [39, 24, 38, 0.61, 47, 17, 26],
              [39, 24, 39, 0.59, 50, 19, 27],
              [93, 68, 96, 1.05, 79, 29, 28],
              [188, 143, 197, 1.66, 99, 51, 29],
              [174, 131, 174, 1.55, 108, 50, 30],
              [187, 143, 201, 1.39, 89, 53, 31]
            ]
          },
          {
            name: 'Guangzhou',
            type: 'radar',
            lineStyle: {
              width: 1,
              opacity: 0.5
            },
            data: [
              [26, 37, 27, 1.163, 27, 13, 1],
              [85, 62, 71, 1.195, 60, 8, 2],
              [78, 38, 74, 1.363, 37, 7, 3],
              [21, 21, 36, 0.634, 40, 9, 4],
              [41, 42, 46, 0.915, 81, 13, 5],
              [56, 52, 69, 1.067, 92, 16, 6],
              [64, 30, 28, 0.924, 51, 2, 7],
              [55, 48, 74, 1.236, 75, 26, 8],
              [76, 85, 113, 1.237, 114, 27, 9],
              [91, 81, 104, 1.041, 56, 40, 10],
              [84, 39, 60, 0.964, 25, 11, 11],
              [64, 51, 101, 0.862, 58, 23, 12],
              [70, 69, 120, 1.198, 65, 36, 13],
              [77, 105, 178, 2.549, 64, 16, 14],
              [109, 68, 87, 0.996, 74, 29, 15],
              [73, 68, 97, 0.905, 51, 34, 16],
              [54, 27, 47, 0.592, 53, 12, 17],
              [51, 61, 97, 0.811, 65, 19, 18],
              [91, 71, 121, 1.374, 43, 18, 19],
              [73, 102, 182, 2.787, 44, 19, 20],
              [73, 50, 76, 0.717, 31, 20, 21],
              [84, 94, 140, 2.238, 68, 18, 22],
              [93, 77, 104, 1.165, 53, 7, 23],
              [99, 130, 227, 3.97, 55, 15, 24],
              [146, 84, 139, 1.094, 40, 17, 25],
              [113, 108, 137, 1.481, 48, 15, 26],
              [81, 48, 62, 1.619, 26, 3, 27],
              [56, 48, 68, 1.336, 37, 9, 28],
              [82, 92, 174, 3.29, 0, 13, 29],
              [106, 116, 188, 3.628, 101, 16, 30],
              [118, 50, 0, 1.383, 76, 11, 31]
            ]
          }
        ]
      }
    };
  },
  mounted() {
// 获取 ref 元素的 dom 节点
    const chartDom = this.$refs.chart;
// 初始化可重用的 echarts 实例
    this.chartInstance = echarts.init(chartDom, null, { renderer: 'canvas' });
// 注册图表组件
    echarts.use([TitleComponent, LegendComponent, RadarChart, CanvasRenderer]);
// 设置图表配置项并渲染
    this.chartInstance.setOption(this.option);
  },
  beforeDestroy() {
// 销毁 echarts 实例
    if (this.chartInstance) {
      this.chartInstance.dispose();
      this.chartInstance = null;
    }
  }
};
</script>

<style scoped>
.radar-chart .chart {
  height: 400px;
}
</style>
